3x+6×1.2=9.6解方程
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解:解方程, 此方程的解为x = 4/5,【即x = 0.8】
3x + 6 × 1.2 = 9.6
3x + 6 × (1×10+2)/10 = (9×10+6)/10
3x + 6 × 12/10 = 96/10
3x + 6 × 6/5 = 48/5
3x + 36/5 = 48/5
3x = 48/5 - 36/5
3x = 12/5
x = 12/5 ÷ 3
x = 12/5 × 1/3
x = 4/5
∴x = 0.8
答:此方程的解为x = 4/5,【即x = 0.8】
3x + 6 × 1.2 = 9.6
3x + 6 × (1×10+2)/10 = (9×10+6)/10
3x + 6 × 12/10 = 96/10
3x + 6 × 6/5 = 48/5
3x + 36/5 = 48/5
3x = 48/5 - 36/5
3x = 12/5
x = 12/5 ÷ 3
x = 12/5 × 1/3
x = 4/5
∴x = 0.8
答:此方程的解为x = 4/5,【即x = 0.8】
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